Having been developed before the onslaught of the Clone Wars, the first batch of B2 super battle droids was put into operation on Geonosis, during the battle that started the conflict.[15] The droids could take more hits and could stand up better to their enemies than the B1 battle droid could, meaning it saw greater production after the battle of Geonosis, but on the battle field there were often more B1's. This was due to the B1's cheaper price tag, and on a battlefield there were often one hundred B1 Battle Droids for every one B2 Super Battle Droid.[16]

One Super Battle Droid was G21, who served as part of the Separatist Droid Army during the Clone Wars and gave a report to a superior that the planet it was stationed on was secured for the Confederacy and the population was under control.[1]